egfr.mdrd: Estimated GFR Using the MDRD Formula

In benjaminrich/PCSmisc: Useful functions for longitudinal data set construction and manipulation.

Estimated GFR Using the MDRD Formula

Description

Computes estimated glomerular filtration rate (GFR) using the Modification of Diet in Renal Disease (MDRD) formula.

Usage

egfr.mdrd(..., scr.mg.dL, age.yr, is.female, is.black, bun.mg.dL=NULL, albumin.g.dL=NULL, scr.umol.L, scr.conversion.factor = 88.4)

Arguments

...	Ignored. This forces all parameters to be named, which is safer.
scr.mg.dL	Numeric. Serum creatinine in mg/dL.
age.yr	Numeric. Age in years.
is.female	Logical. TRUE for females, FALSE for males.
is.black	Logical. TRUE if race is 'black', FALSE otherwise.
bun.mg.dL	Numeric. Blood urea nitrogen (BUN) concentrations in mg/dL (optional).
albumin.g.dL	Numeric. Albumin concentration in g/dL (optional).
scr.umol.L	Numeric. Alternative specification of serum creatinine in umol/L.
scr.conversion.factor	Numeric. A factor for converting serum creatinine from umol/L to mg/dL.

Details

All arguments can be vectors. Albumin and BUN are optional. If they are specified, a more elaborate version of the MDRD equation is used.

Value

A numeric vector containing the estimated GFR mL/min.

Author(s)

Benjamin Rich <[e-mail]>

References

http://en.wikipedia.org/wiki/Creatinine_clearance

See Also

crcl.cg

Examples

# With serum creatinine in mg/dL
egfr.mdrd(scr.mg.dL=0.9, age.yr=53, is.female=FALSE, is.black=FALSE)

# With serum creatinine in umol/L
egfr.mdrd(scr.umol.L=0.9*88.4, age.yr=53, is.female=FALSE, is.black=FALSE)

benjaminrich/PCSmisc documentation built on Feb. 11, 2024, 9:25 p.m.